JEE Main 2023 (Online) 13th April Morning Shift | Polymers Question 3 | Chemistry

1

JEE Main 2023 (Online) 13th April Morning Shift

MCQ (Single Correct Answer)

+4

-1

Out of Syllabus

Match the following

	Column A		Column B
(a)	Nylon 6	(I)	Natural Rubber
(b)	Vulcanized Rubber	(II)	Cross Linked
(c)	cis-1, 4-polyisoprene	(III)	Caprolactam
(d)	Polychloroprene	(IV)	Neoprene

Choose the correct answer from options given below:

A

$$\mathrm{a} \rightarrow \mathrm{III}, \mathrm{b} \rightarrow \mathrm{II}, \mathrm{c} \rightarrow \mathrm{I}, \mathrm{d} \rightarrow \mathrm{IV}$$

B

$$\mathrm{a} \rightarrow \mathrm{II}, \mathrm{b} \rightarrow \mathrm{III}, \mathrm{c} \rightarrow \mathrm{IV}, \mathrm{d} \rightarrow \mathrm{I}$$

C

$$\mathrm{a} \rightarrow \mathrm{IV}, \mathrm{b} \rightarrow \mathrm{III}, \mathrm{c} \rightarrow \mathrm{I}, \mathrm{d} \rightarrow \mathrm{II}$$

D

$$\mathrm{a} \rightarrow \mathrm{III}, \mathrm{b} \rightarrow \mathrm{IV}, \mathrm{c} \rightarrow \mathrm{I}, \mathrm{d} \rightarrow \mathrm{II}$$

2

JEE Main 2023 (Online) 12th April Morning Shift

MCQ (Single Correct Answer)

+4

-1

Out of Syllabus

Match List I with List II

	LIST I (Examples)		LIST II (Type)
A.	2-chloro-1,3- butadiene	I.	Biodegradable polymer
B.	Nylon 2-nylon 6	II.	Synthetic Rubber
C.	Polyacrylonitrile	III.	Polyester
D.	Dacron	IV.	Addition Polymer

Choose the correct answer from the options given below:

A

A-II, B-IV, C-I, D-III

B

A-IV, B-I, C-III, D-II

C

A-II, B-I, C-IV, D-III

D

A-IV, B-III, C-I, D-II

3

JEE Main 2023 (Online) 11th April Evening Shift

MCQ (Single Correct Answer)

+4

-1

Out of Syllabus

Given below are two statements :

Statement I : Ethene at 333 to $$343 \mathrm{~K}$$ and $$6$$-$$7$$ atm pressure in the presence of $$\mathrm{AlEt}_{3}$$ and $$\mathrm{TiCl}_{4}$$ undergoes addition polymerization to give LDP.

Statement II : Caprolactam at $$533$$-$$543 \mathrm{~K}$$ in $$\mathrm{H}_{2} \mathrm{O}$$ through step growth polymerizes to give Nylon 6.

In the light of the above statements, choose the correct answer from the options given below:

A

Both Statement I and Statement II are true

B

Statement I is true but Statement II is false

C

Statement I is false but Statement II is true

D

Both Statement I and Statement II are false

4

JEE Main 2023 (Online) 11th April Morning Shift

MCQ (Single Correct Answer)

+4

-1

Out of Syllabus

The polymer $$\mathrm{X}$$ - consists of linear molecules and is closely packed. It is prepared in the presence of triethylaluminium and titanium tetrachloride under low pressure. The polymer $$\mathrm{X}$$ is-

A

High density polythene

B

Polytetrafluoroethane

C

Low density polythene

D

Polyacrylonitrile